This stool is as good as most stools to be honest. As it is Gibraltar the build quality is very good, a lot better than the super cheap stools. It has good adjustment and a double lock to stop the seat slipping from its position.
The seat is very comfortable although after a few hours playing in warm conditions it can come a little uncomfortable due to perspiration, 2 minutes off the stool and it is fine.
Overall a very good stool although a little pricey so it loses a star for that, £5 cheaper and it would be 5 stars.